Overview

The GeoJSON Tool is a web based visualization tool for GeoJSON data
that can quickly display data from
a various sources, highlight and inspect specific features and supports even complex operations
like finding data based on content.

When you work with data on the map and select one feature, this features highlights on the map a
magenta color. At the same time, the payload properties are shown in a heads-up data overlay in
the top left hand corner of the map, where you can drill down into the individual attributes

On the right hand side of the page you see the GeoJSON text editor. Here you can type or paste
GeoJSON describing the features you want to see on the map.

GeoJSON structure

You will notice that the editor does some automatic formatting on the text you are typing
to bring into a structured form. This indenting makes it easier to work with the nested
nature of GeoJSON.

In the left margin of the panel you notice line numbers, as well small triangles. The
latter allow you to collapse or expand regions of the text that you don't want to see
right now:

GeoJSON syntax check

In addition to outlining the structure, the editor also checks if the GeoJSON is valid. A
missing a bracket or a comma can make your GeoJSON invalid for display. The editor tries to give you a hint
by showing a marker in the margin: